Effect of Cooling Rate on Microstructure and Mechanical Properties According to Heat Treatment Temperature of Inconel 625

• Autorzy: Park Minha , Lee Gang Ho , Kim Hyo-Seong , Kim Byoungkoo , Noh Sanghoon , Kim Byung Jun

Identyfikatory

DOI

10.24425/amm.2024.147793

• Języki publikacji: EN

Abstrakty

EN

Inconel 625 is typically used in extreme environments due to excellent mechanical properties such as high strength, corrosion resistance, abrasion resistance and low-temperature toughness. When manufacturing a hot forged flange with a thick and complex shape, the cooling rate varies depending on the location due to the difference in thermal gradient during the cooling process after hot forging. In this study, to evaluate the microstructure and mechanical properties of Inconel 625 according to the cooling rate, we performed heat treatment at 950°C, 1050°C, and 1150°C for 4 hours followed by water cooling. Additionally, temperature data for each location on the flange were obtained using finite element method (FEM) simulation for each heat treatment temperature, revealing a discrepancy in the cooling rate between the surface and the center. Therefore, the correlation between microstructure and mechanical properties according to cooling rate was investigated.

Słowa kluczowe

EN

Inconel 625; heat treatment; cooling rate; microstructure; mechanical property

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2024
• Tom: Vol. 69, iss. 1
• Strony: 95--98
• Opis fizyczny: Bibliogr. 10 poz., fot., rys.

Twórcy

autor

Park Minha

• Energy System Group, Korea Institute of Industrial Technology, Busan 46938, Republic of Korea

• https://orcid.org/0000-0001-6229-185X

autor

Lee Gang Ho

• Energy System Group, Korea Institute of Industrial Technology, Busan 46938, Republic of Korea
• Pukyong National University, Department of Materials Science and Engineering, Busan 48513, Republic of Korea

• https://orcid.org/0009-0006-6166-6166

autor

Kim Hyo-Seong

• Energy System Group, Korea Institute of Industrial Technology, Busan 46938, Republic of Korea
• Pukyong National University, Department of Materials Science and Engineering, Busan 48513, Republic of Korea

• https://orcid.org/0000-0002-9965-5925

autor

Kim Byoungkoo

• Energy System Group, Korea Institute of Industrial Technology, Busan 46938, Republic of Korea

• https://orcid.org/0000-0002-5392-5862

autor

Noh Sanghoon

• Pukyong National University, Department of Materials Science and Engineering, Busan 48513, Republic of Korea

• https://orcid.org/0000-0003-4943-1226

autor

Kim Byung Jun

• Energy System Group, Korea Institute of Industrial Technology, Busan 46938, Republic of Korea

• https://orcid.org/0000-0002-7205-0045

Bibliografia

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Uwagi

This study was supported by the R&D Program of the “Materials/Parts Technology Development Program” (20024858, Development of high manganese steel valves, flange, fitting parts for 40,000 m³-class liquid hydrogen transport system).